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.
Either you have a blockage present or your vents on your sewer lines have become blocked or you need to install more vents.
Sounds like the trap in the sink is getting the water pulled out of it. It probably wasn't vented properly.
Only if you want to smell the fumes all the time. Code says it should be through the roof or above the edge of the roof.
you can either check that there is a smell if there is a liquid bottle in your air freshner than see if there is any liquid left
Yes, my brother's house in CT. has the same issue and the cause is still undetermined. I initially thought that the house was so tight, that the fireplace "draw" was pulling the gas right thru the traps. That does not appear to be the case as the smell doesn't appear to be coming from the sink. He doesn't know of any vent inside the house, that could explain this. I'm going to suggest that he crack a door or window in the family room and see if that short circuits the draft and has any effect.
I have seen this where water has leaked into the ductwork and stagnated.
Several potential causes could be contributing to the sewer smell outside your house, such as a blockage in the sewer line, a damaged sewer pipe, or a problem with the sewer vent. It is recommended to contact a professional plumber to inspect and address the issue promptly.
Coils and filter need cleaning.
A sewer smell in the bathroom is usually caused by a dried-out P-trap, which is a curved pipe that prevents sewer gases from entering the room. To resolve this issue, pour water down the drain to refill the P-trap and block the odor. Additionally, check for any leaks or blockages in the plumbing system that may be causing the smell.
Possible causes of a sewage smell coming from the bathroom sink include a dried-out P-trap, a clog in the drain, or a problem with the sewer venting system.
A sewer smell in the laundry room can be caused by a dried-out P-trap, clogged drain, or a damaged sewer line. To resolve it, try pouring water down the drain to refill the P-trap, clean the drain with a mixture of vinegar and baking soda, or call a plumber to inspect and repair any damaged sewer lines.
Change the wax seal under the toilet
A sewer smell coming from your sink could be caused by a dried-out P-trap, a clog in the drain, or a problem with the sewer vent.
Awful.
It could have a blown gasket which causes that smell. And there could be something loose in the interior of the air conditioner.
A car air conditioner may smell like sewer due to mold or mildew growth in the evaporator core or drain pan, where moisture can accumulate. This stagnant water can create a breeding ground for bacteria, leading to unpleasant odors. Additionally, a clogged drain line can trap water, exacerbating the problem. Regular maintenance, including cleaning the system and using a disinfectant, can help prevent these smells.
The sewer smell in your house after rain may be due to a backup or blockage in your plumbing system, which can cause sewer gases to escape into your home. The rainwater may also be causing the sewer lines to become overloaded, leading to the smell. It is important to address this issue promptly to prevent any potential health hazards.