この牛乳ぎゅうにゅう、ちょっと臭くさくない？

kono gyuunyuu, chotto kusakunai?

Doesn't this milk smell a bit off? casual

ごみを片付かたづけていないので、台所だいどころがとても臭くさいです。

gomi o katazukete inai node, daidokoro ga totemo kusai desu.

The rubbish hasn't been cleared, so the kitchen smells awful. neutral