Yes, a faulty furnace can be very hazardous to your health.
When a furnace isn't working properly it has an increased risk of carbon monoxide emissions, which can be fatal.
Anytime you use fire or explosives it can be dangerous they can be faulty and explode in an instant or start a fire. Health risks can be caused by these or smoke inhalation or fumes from them can be hazardous to you.
Yes, mercury is very hazardous to health when touched, inhaled, or eaten.
No
Control of Substances Hazardous to Health.
Your MOM IS A FURNACE
An easily found carbon monoxide detector
Yes, it is.
COSHH is Control of Substances Hazardous to Health. It is a law that requires employers to control substances that are hazardous to health. There are several methods to reduce workers exposure to hazardous substances.
chromium is very hazardous to health
Well it could be the hot and neutral wire needs to be swapped at the furnace. And if its an older unit that this has just occur on the control board could be faulty.
HEalth
Alcohol is a drug and car should be taken with it. The more someone drinks, the more hazardous it will be to their health. In moderation though, drinking will do minimal damage to ones health.