Honda GX 31 exhaust fumes?

This might seem stupid but I have to ask. Why does my Honda GX31 exhaust smell like an old car's exhaust? I was wondering if it could be running rich but there's no air/fuel mixture screw. I checked the plug color and it is tan with blots of black (dry) on the rim of the plug. I only ask because when it is running I'm chocking on the exhaust fumes which come out clear with no smoke.

Well the exhaust of any gas engine is a mix of nasty and toxic chemicals. Old car, new car, stationary engine etc.

Sounds like you need more ventilation to clear the fumes. In an enclosed area they can kill you.

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