How do you say you smell like chicken in french?

The literal translation of "He is a chicken." is

C'est un poulet. -- "seh (t)eh[n] poo-leh"

But I wonder if you intend chicken as a synonym of coward. In that case, you could say

Il a la trouille. -- "ee lah lah trooy(uh)"

Il est trouillard. -- "ee leh troo-yar"

Il est froussard. -- "ee leh froo-sar"