My roommate reheated fish in the microwave about 2 weeks ago. It still smells really bad and makes me gag whenever I cook food in it (not sure if she left the fish in there for too long, but it really does still smell bad, and 2 weeks is a generous time period, probably closer to 3). 

On the day this happened, I said to her that it smells insanely bad and to try not do it if she can avoid, but she said she doesn't mind the smell of fish, which lead to me thinking it was just me being anal (as I don't like fish, esp the smell), so I didn't really talk about it much more. She also said she's trying to eat healthier so will be eating fish more, she was apologetic but isn't going to stop reheating fish in the microwave.

We both pay equal rent and the microwave is mine (but we share things like that, I use her pots, etc). We're both female and we aren't dating (in case not obvious).

I was scrolling down a reddit thread today and read a joke about reheating fish in the microwave at work, which lead me to search am I the asshole threads for this topic. I stumbled upon [this thread] and the general consensus was that the guy reheating the fish in the office microwave was the asshole. This made me realize I probably wasn't being pedantic and maybe it wouldn't be unreasonable for me to ask my roommate not to reheat fish in the microwave - but I understand that reheating at home is different to at work.

So, WIBTA for asking my roommate not to reheat fish in the microwave?