

I was rewatching the show again and my mom called out something which I hadn't ever thought of...
I'm sure this has been talked about many times and I just missed it, but how likely was Walt's cancer caused by the chemicals he inhaled during his time working at the carwash? It's stated in the series that he uses the right protective gear when dealing with chemicals in his regular job, but so far I haven't seen mentioned or remember the cause of cancer ever being linked to breathing in toxic fumes from the carwash. Could there even be a connection? or are the chemicals of the carwash harmless?
If it is the case... FUCK YOU BOGDAN!