Methane, hydrogen Sulfide and many other highly carcinogenic fumes are found in the sewers
no, unless there is something being put in a drain nearby that has a lot of chlorine in it such as pool water. Sewer gas generally smells like an out house.
No. It has a very specific odor because natural gas really has no odor at all so Mercaptin is added to give it an odor unlike anything else.
Awful.
Awful.
If you think you smell sewer gas in your bathroom, it could be that a sewage blockage is in your pipes, causing the sewage to back up in the lines.
There is no permanent health effect of sewer gas odors but it can make one nauseated to smell the odor.
If it is a sewer gas, you can detect it with a combustable gas detector.
Call the police, fire dept or Con Edison or all 3.
Over time yes as it does cause some type of brain and liver cancers
Perhaps a gas leak? The gas we use for cooking is originally odourless, but a smell is added during manufacturing to let us know if there is a leak, and this smell is most commonly sewer-like.
One of the biggest culprits I have found for sewer gas smell is the floor drain many floor drains are seldom if ever used and if unused long enough the water in the trap will evaporate allowing sewer gas to enter the dwelling. this also applies to any trap which is not used regularly.
Heck no as it is a very carcinogenic mixture
If you are on a septic system, it is plugged.
It is probably sewer gas or something coming up from the drain.