Air intake location

[Iceman]

Hi all can anyone tell me where the fresh air intake for the aircon/heater is? I suspect i have an exhaust leak as i get a sulphorus smell when loading the engine and after a 300km trip today i think i had carbon monoxide exposure. Feel really crap. I did have a warped manifold repaired a few months ago but think it may have gone again. Just need to try and find how fumes could enter the cabin.
Cheers
Oh its a thai D40 ST 2010.

 

[bods]

Pretty sure it is under the plastic panels between the windscreen and firewall on the passenger's side. So kinda right above where the exhaust manifold and turbo sit...