Smoke in cab - burning eyes

i haven’t repaired the heater it just seems to be coming from the vents. It’s possible it’s the antifreeze. Just spent 45 mins taking off the dash on the passenger side and it’s not directly coming from anything on that side. Trying to take off center dash now…

the smoke starts immediately after I turn the truck on

 

I think I found it… I just have no idea what I’m looking at unfortunately

 

Holy #### … I just touched the clamp and the whole thing is not connected

 

My arms are too short to reach it with both hands since the air filter is in the way…. Down side of being a short female in trucking I guess

 

I’ll see if they have one of these clamps at the flying j I’m at and if not I’ll see if I can Uber to Napa auto parts. Thank you guys so much for your help!!

 

the screw is missing from the clamp. I can reach it better if I stand on my step stool in front of the steer tire instead of to the side. I’ll give an update once I get a new clamp. Thank you!