I sneezed and coworker said " bless you" my mind just went blank. I got nothing. Finally I say.. you too!

I usually say "thank you". I always say Gesundheit when someone sneezes, cuz that's what my fam always said, and it has no religious implications which some may be sensitive to.

I think that's an appropriate reply...

When someone told me to have a nice trip I said "you too" enem though they weren't going anywhere.

I was waiting for you to say. It was then I realized there was no one else in the building. 😁

At least they didn’t laugh like hyenas and mock you like some I know.

Nothing wrong with blessing them (unless they are snowflakes)
Your welcome

At least it was only your blessings upon them. 😜

Heres a tissue