Have 2 big ones for us, but will do 2 posts.
In the 1980s. DH & I stayed at the now demolished "Vacation Villas" across water from DTD Marketplace. Entered room. AC not on. Windows/doors all closed, of course. Saw couple bugs on kitchen floor - one not moving & one appeared to be near death.
Called Front Desk. They said they would take care of it. We left to go eat. Returned. Villa smelled horrible - they had sprayed, instead of using the gel stuff. Called Front Desk. Sent someone to our villa to change us to the one next door.
Within few minutes as DH & I & CM were moving our items to next door (those were the days of no wheels on luggage & we took "lots" of "stuff" when we traveled!). As I exited our villa, I got dizzy. Sat on patio chair. Couldn't move anything in my body. Couldn't call out to DH & CM as they passed me (they thought I was letting them do the work!). Slobber was coming out of my mouth.
Then they noticed. Took me inside, on couch. Called paramedics. By time they got there, I was back to normal. Didn't go for treatment - nothing to treat at that time.
From that date until now & I assume until I die, I get a horrible "reaction" when I get exposed to chemicals. I get lethargic, nauseated, all smells are intensified, can't eat, can't work, can't anything except lay around like a vegetable. After we returned from that trip, I was down for 6 weeks.
Since then, our cars contain face masks for me in case a road is being paved & no way around. Can't wear cologne. Get sick if walk into a place that used cleaning chemicals (walked out of hotel once because it smelled like Mr. Clean!). When I now detect "smells", I know to cover my mouth & nose with a hanky, scarf, shirt, anything & get away. Then I'm only sickly for few days.
Didn't sue, because there is no way to prove - no blood tests, etc. Found out they had sprayed Dioxin or Diazinon - forget which, but it has since been banned & was only supposed to be used outside or when interior is WELL VENTILATED - windows/doors were closed & no AC on.
I hate this inconvenience in my life, but I'm glad there were not any children or pregnant women present.