Hazley's answer page 8 (142)

I have a feeling they know but are staying quiet, have no idea what they would say if they knew tho. Who knows maybe they would just say "hey thats gross" and move on?   reply

This seems like so many different anime and manga. Check out: Frieren: Beyond Journey's End I haven't actually read or watched it fully but it seems similar to what you're asking for, though I dont think its what you want. The other thing this reminds me of is one particular chapter of The Seven Deadly Sins.   reply