HEY... what are you doing?

Question

With H I taste good.
With E I smell good.
With Y I snoop in the hood.

What am I... with HI?

Answer 1

You are:

the letters NOS.

With H I taste good.

Adding an 'H' to the end gives us NOSH, another word for food (which tastes good).

With E I smell good.

Adding 'E' gives NOSE, something which smells well.

With Y I snoop in the hood.

Adding 'Y' makes you NOSY, prying into what others are up to in the neighbourhood...

So, with HI you are:

NOSHI - a ceremonial origami fold, given as a gift to express 'good wishes'. (So thank you!)