Stayed in an airbnb recently that was pretty insane. It was a shared space with several other people in it, but I had my own private room and small living room with a mini fridge and counter. I stayed in room and barely came out since covid-19 quarantine measures had just started to be enacted. Pretty soon after getting there I started having shortness of breath and vertigo. I started finding drawings in a sketchbook I had that I had no memory of drawing. I didnt speak to anyone for days and started getting really paranoid that someone was going to try to come into my room while I slept. After about a week there I thought I had already died and everything I was seeing was a hallucination to get my mind ready for death. I lived with that and other weird thoughts for another week till I read something on reddit about carbon monoxide poisoning. Called the gas company and turns out, sure enough there was a natural gas leak in my room. Lucky to be alive. Took weeks to get the host and airbnb to even compensate me for my stay.