Well it can cause irritation to the eyes, lungs, and nose of those breathing it in. Unless you have Asthma or another breathing condition there isn't too much to worry about. The main symptoms include coughing and runny noses. In cases of Asthma bronchitis have been reported.
(Source: 5 minutes of googling)
carbon monoxide, cigarette smoke, marajuahna.... there are a lot of things that are bad for the breathing system.
no
Yes but we will still die if we hold our breath and breathing is how we age and die
Good if you like wood. Bad if you like breathing.
Morphine causes decreased breathing which for a pug can be fatal because they already have trouble with breathing.
BAD LUNGS you'll have problems breathing
it is called bad for you!
It affects our breathing and is bad for the environment.
The Buteyko method strives to remove the bad habits of over-breathing and to replace them with new habits of slower, shallower breathing, called "reduced breathing."
No, unless there is thin or less air.
the oxygen you are breathing is good and bad there is nothing wrong with that
Halitophobia is the term for fear of bad breath. I don't think there exist a phobia for fear of breathing but I guess it would be "Anapnophobia" or something.