This happens all the time in my building because of fuckheads who smoke indoors with all the windows shut. It's really fucking annoying, and means that when the alarms go off, a lot of people don't bother evacuating because they assume its just another false alarm, meaning if there ever were a fire a lot of people would be fucked.
Interesting that Phil has no consideration for the other working-class people in his building who would have to evacuate because he wanted to light a flag on fire indoors for his own amusement. A real friend of the workers.