Smoking inside (don’t usually notice much as the living room is big enough that we’re usually spread out. but when they have people round, and everyone is smoking, it’s a bit annoying. if i die of lung cancer i’m gonna be so pissed off)
Putting a wash on and then just leaving the the clothes in the washing machine for ages after (admittedly i do this sometimes but usually because the drying rack is full. if it’s out of laziness i don’t leave them too long, or go out for the day/night without taking them out)
Keeping food in pans/bowls for ages (there’s a glass cooking dish in the kitchen that’s been there for months now with some old food that went blue and now black. seems uncharacteristic of my housemate and i don’t get why she’s never chucked it out. it’s sealed closed with a lid so not really a hygiene issue but i should probably just dump it soon)
Having dates round to hang out in the living room (doesn’t happen too often but feels a bit awkward)