[tzahola]

5000 particle? LOL! If that was true we would all have cancer:

“The average concentration of radon in the atmosphere is about 6×10−18 molar percent, or about 150 atoms in each ml of air.”

https://en.m.wikipedia.org/wiki/Radon

[bitL]

Enjoy your ignorance:

https://ratical.org/radiation/CNR/CHfIP1975.pdf

[tzahola]

Nowhere in this document do they state that inhaling 5000 particles increases lung cancer risk by 1%.

I recommend revisiting high school chemistry, especially the topic of molar mass. (Hint: Plutonium is about 250 g/mol. One mol is 6x10^23 particles.)