I didn't see this sign

yesterday, the fire alarm kept going off (I was baking cookies at the time), but i couldn't smell anything burning, nor was it extremely hot to cause it to go off. So i'm thinking that either I have no sense of smell anymore, or the fire alarm is broken. So initiallyI start waving a towel at the detector to fan away the imaginary smoke that was setting it off. then i wanted to call the rental office to see what was up, but i didn't know the number (nor did i actually try to find it or leave the apartment to go to the office. Clearly I was more concerned about finding out if i was crazy than about the potential fire that was about to burn the building down). This morning, i found the following at the bottom of the stairs:

oopsie.