The Meeting...

Moving farther into the warehouse, you all start to feel very uneasy, as if something is unquestionably not right here. It feels different like there is a strange energy in the air you just can't put your finger on it.

As you follow after Logan, you all start to feel very strange. Your ears pop, then start ringing, your head starts throbbing, your hands start shaking, your vision blurs, and your stomach quenches. 
The feeling overwhelms Walter and he looses his dinner all over the warehouse floor. 
The uneasy feeling and other ailments persist.

Logan while rushing closer you catch the unmistakable scent of your father in the direction of the shipping containers. He was here.. Less then an hour ago..

"Hrk! Oh god... hrrrk! I-I don't feel good..."

Walter becomes aware that this sickness had hit him all of a sudden as he gets near to the containers, not likely because of a bad meal he had recently. A strong feeling of foulness overwhelms him, and he instinctively takes steps back from them. As he tries to steady his breath, he watch the others not reacting as badly as he did, but it is clear he is not the only one to sense something disorientating.

Logan turns to Walter allowing to see his visual change. That feeling is not natural. My genetic mutation is not. We eat genetically modified food. Is the food supernatural?
Anyhow. Do you have any idea what is going on here? Are we poisoned?

Felix staggers. This was a bad idea. A very bad idea. "Yeah it's gotta be some kinda gas."

Logan realize that being scared to he just told more that he wanted to tell. He decides to back and get out of the warehouse to get some fresh air.
I think we are too late. Dad's no here any more. I mean ... David has been moved. Why would they leave him alone here?
And Logan runs out of the warehouse leaving door open hoping to ventilate the air somehow.

The Artefact Seller sees that Logan have changed a little. That, and the comment on his mutation, seems odd but Walter chooses to focus on the strange effect than the nature of Logan. The sickening phenomena might possibly be magical, or at least he is better at identifying if it is than natural poison gas leak...

@RoAries
Scrolling though Walters previous expertise with occult items and location one comes to mind that gave him a similar but lesser feeling the what he is feeling now. There was a Old forgotten mansion he once visited for an auction. Rumors said that the mansion was haunted or possessed and the previous family was found dead after only living there for a few months. You felt the same unease feeling there as you do here. Like being on Unholy grounds or a place where terrible things have happened and the spirits are restless...

And just like that, the sickening terror disappears. What the hell? Hallucinogens don't just switch off like that.

"Logan, where are you goi—?"

Walter still looks spooked. Felix shakes his head. It's all falling to pieces but he's gotta stay focused on objectives. He makes for the shipping containers.

Logan takes a few deep breaths outside and replyFelix. I'm going to open Gates to ventilate. Right? And I guess you better hold your breath not talking.

With the unnatural terror gone and nothing else stopping him, Felix inspects those shipping containers.

Logan takes deep breath outside. Then hold his breath and try to get to container again.

Walter visually shows concern about the warehouse now that he recalls what this sensation could mean. "Um, guys? I think something really messed up had happened here. This is hard to explain, but I sense an air of anguish here. Just... be careful.."

He wants imply to imply that a supernatural evil aura is present, but in case he is wrong, he doesn't want to make it sound like he is crazy. He will remain to keep his distance while the others investigate.

Felix tries the door to the container on the left.

The door is unlocked.
It opens to a mostly empty plain white shipping container.
Muddy boot prints lead up to a single stainless steel table with a single stainless steel folding chair in front of it.
On top of the desk is a single flat screen monitor, a wireless mouse and a Wireless keyboard And a simple rotary telephone.

Felix is curious about the workstation but first he checks out the other two shipping containers.

The right shipping is an exact replica of the left one. Everything is the same, The muddy prints, single steel table and chair, Computer set up and Telephone.

As you search around for access to the middle shipping container do can not find one...