I run the gas dryer,i smell gas...turn off dryer,no smell.....

i don't know. hook up should have been by a qualified installer and properly inspected and tested.
be very careful. your unit may be under warranty. please inquire about a free service call before using it again.
dryers blow air to the outside so it vents to the outdoors whenever it is running. there may be a small leak and the odour cold be vented which would account for no odour.
be safe and update your home's insurance.

Did you also replace the coils on the valve assembly?
Which parts did you replace exactly?

Absolutely. Your dryer runs on gas, and the gas kicks on when the heating element engages. It should be so faint though. If you smell it continuously then check your connections with soapy water, if their is a leak then shut off the gas and try using soap pipe dope, or teflon tape on the threads, then recheck. My guess is its the regulator near the heating element. Good luck

Hello PLEASE call your gas utillity and report a smell AT ONCE!They will look at it for free!

Sounds like one of the rubber hoses in the engine bay may be leaking. Could also be a leak somewhere around the carbuerator or fuel injectors.

Turn on the car and look/smell your engine bay. Look for anything that may indicate a leak or try and follow your nose. Leave running for awhle, and if you still can not find it, turn car off, and check all lines again.

your duct is clogged or the limit snapstat is not working. turn dryer on and go outside to the duct vent , their should be a minimum temp of 10 degrees, and a maximum 15 degrees outside. also sometimes just cleaning the lint from inside the dryer, can cause this smell for no more than 5 minutes. thanks karl

If yo smelled gas then the ignitor may not be working.
First thing to check is the ignitor underneath the drum. (You have to open the panel to see it)  It should glow shortly after the dryer starts, then the flame starts and the ignitor shuts off.  If the ignitor does not glow then the thermostat is bad.  If the ignitor is glowing but the gas does not light then the gas valve coils may have to be replaced.   If the gas ignites but does not stay on either the flame sensor or the coils are at fault.

Change your fuel filter

you need to clean out you venting ...it is most likely clogged or filling up

Of course, this applies to gas dryers only. If you smell natural gas near your gas dryer, do not light matches or a lighter and don't operate electrical switches or anything that might spark, igniting an explosion. Immediately shut off the gas valve that serves the dryer. If the smell is mild, ventilate the area, wait until the air is clear, and re-light your pilot light. If the smell is strong, move everyone outside, leaving the doors open to ventilate the house. Turn off the gas supply valve --located by the gas meter on the gas inlet pipe-- by rotating the valve one quarter turn with an adjustable wrench. The valve's oblong stem should be perpendicular (at a right angle) to the inlet pipe to stop the flow of gas. Call your gas supplier (or the fire department) from a neighbor's phone or a cellular phone outside the house.