: Look at the bottom of this web page to see October's questions similar to yours and read the answers submitted. Sewer gasses (major) are hydrogen sulfide and they can be very detrimental to your health in an unvented confined area. The gasses are giving off a strong rotten egg smell? thats the signature of Sulfer. Get the area vented (open a window) call a Licensed sewer repair contractor and ask for an estimateto repair the problem. Call two others to see if the prices and diagnosis are the same. Be Careful. Protect your health!
: : we are having major sewer gas odors in the house and my one main concern is ..... is it dangerous to humans and if so what are the side effects,,,,,