"Many had perished as a result of carbon monoxide poisoning, gas leaks, or any other harmful chemical that is invisible to the human's eye. When noticed, it is already late/fatal."

I want to emphasis on this
I agree with you sir because same thing happened which led to a massive fire outbreak in our village.
And we lost a lot of individuals in the community.

It was sad and tragic
How I wish this invention was made on time to prevent the massive loss of population in our community.
Thank you.