methane gas
Sewer treatment plant hopefully
With a sewer line locator of course
It could be that the condesate drain line has been connected to the wastewater/blackwater stack. The trap (hopefully installed) preventing sewer gas from moving up the condensate line may have dried out. If dry, sewer gasses are no longer blocked by the hydraulic seal... resulting in a nasty smell when the unit is turned on and the fan kicks in. Just a thought.
Only if the trap fell off and it was not properly vented
Sewer Gas (Mostly Methane) is harmful if breathed for an extended period of time, in Infants the risk would be significantly higher. As they would require less time to become poisoned.
Yes, if sewer gas is coming into your home from a backed up drain it can be very harmful to a baby and everyone else inside the home. It can cause hydrogen sulfide poisoning and asphyxiation.
Awful.
methane gas
Awful.
There is no permanent health effect of sewer gas odors but it can make one nauseated to smell the odor.
Yes, sewer gas can be explosive as it is generally a combination of methane, hydrogen sulfide and a variety of other noxious gases.
No, the gas is not harmful.
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.
Because it's harmful to wildlife and the environment.
follow the leak!!!!!!!!!
gas is harmful because it can scar you for life and possibly sufficate you if you breathe in a lot of it.