Potentially, any odor can be hazardous. However, the chances of the concentration being high enough is very unlikely. Open a window, spray some air freshener, and consider relocating your litter box outside.
If you don't have a cat, there's a possibility that there is ammonia in the air, in which case I'd recommend calling 911 for assistance.
Yes especially in a confined space, you can easily get hydrogen sulphide poisoning, the symptoms would be irritated possibly itchy eyes, sore throat, coughing, loss of voice, and if the problem persisted nausea and quite possibly vomiting. You should regularly clean out your litter box, and dispose of the feces an external trash can or dumpster, living with it in a confined space can be potentially dangerous.
-----
Yes, living in fesses is bad for your health.
Yes
How is animal hearing different then humans?
Humans.
Yes, but they do not have vocal cords. Their breathing organs (while breathing) emit a hissing sound.
The mosquito
As it has been described as half argon gas and half nitrogen gas the gas reffered to would be very dangerous to humans.
i really have no idea!
Yes, the affects on smelling human feces bacteria fumes specifically those mixed with urine in a confined area could result in mild hallucination, furthermore, when injested over a prolonged Period could result in bacterial infection.
hazardous waste
A: Yes it can be very hazardous because waste fumes shouldn't be inhaled back into the body of any species, in fact some people have died from the addiction of sniffing other humans feces.
when it completes a circuit in the body
Carbon Monoxide gas.
The two phases of breathing are breathing in and breathing out. Humans breathe in oxygen and they release carbon dioxide when they breathe out.
Yes, humans are oxygen breathing mammal.
No only a few are hazardous to humans ..the dust mite and scabies mite
There is not an animal that humans don't kill!!!!!!!!
The only way in which Humans can take in Oxygen is by Respiration (Breathing)