In how many years form now do you think we'll have to wear gas masks to breathe because of air pollution?

In how many years form now do you think we'll have to wear gas masks to breathe because of air pollution?
if this time will come i hope it comes in a year after i die..i don't want to be walking with a gas mask all day
It's not too far off that is the reason they are trying to find habitable planets and talking about colonizing the Moon and Mars.
you need to learn the facts air pollution is at an all time low so there is no danger of gas masks becoming a factor. I'd be more worried about being prepared for the next ice age. global warming is a false as well start reading the science journals for the truth and listen to Glenn Beck for all kinds of truths that you will not hear from any other news source. Good Luck to us all.