Heavy industry environment using poor fuel or heating materials
Light industry environment with little use of fuel or heating materials
Office or workplace not using fuel or heating materials
Work from home or place unrelated to fuel or heating materials
Yes, frequently
Yes, but not often
Rarely or very little
Never
Yes, frequently and severely
Yes, but not often or not severe
No symptoms but feeling tired
No symptoms
Not trained
Trained once
Trained multiple times and regularly updated knowledge
Not applicable (job unrelated to CO risk)