1997 Lincoln Town Car gas smell

When vehicle is moving there is a strong gas odor
more so when 1 window is put down or ac is placed on max fan high
i have checked the fuel lines and tank - short of pulling them out all looks ok with no indication of leaking
a friend suggested the vapor recovery may have some sort of canister with with pellets/?
that may not be venting/filtering properly?
does my vehicle have something like this?
if so where might it be - physical location
the smell seems to be strongest in the trunk area