Is this possible?

I work as a student employee at my college. I’m the only student employee for this department. We have inactive files that are in an upstairs room on top of our library building that I have been working in. I’m not typically up there and no one ever goes up there but I have to access the filing cabinet up there for a project I’m working on. Last week I noticed there was a can of wasp spray/insecticide on top of the filing cabinet I work on as well as an orange liquid sprayed on the floor and dead wasps. I sat on the ground directly next to this goo for 3 days straight, 3 hours each time. On Monday of this week (about 4 days after inhalation/exposure) the right side of my neck where my thyroid is started to swell. The next day I had extreme thirst, a rash on my skin that moves around and my top lip swelled for 12+ hours and Benadryl didn’t even make the swelling stop. My neck is still swollen. When I got to work today I looked at the back of the can and it says to never spray indoors and to never spray the product in a way that will contact adults, children or pets either directly or through drift, to not enter the treated area until sprays have dried and that it’s a federal violation to use it in a way that is inconsistent with the labeling. I’m thinking that I am having a delayed allergic reaction to inhaling this stuff but don’t know if that’s possible 4+ days later. There is no ventilation in that room at all, no windows, fans etc. Is it possible?