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The alarm should sound within 60 minutes if the concentration rises to 70 PPM, within 10 minutes at 150 PPM, in 4 minutes at 400 PPM, and immediately at 500 PPM or greater

All other types of burning heater smells are potentially dangerous and demand inspection from a qualified Heating technician

Conclusions Considering these premises, it is evident that much detailed translational and clinical studies are needed

Probably less than 5% of lung cancer is caused by breathing polluted city air

The primary reason for power banks to be prohibited in check-in bags is their components lithium ion batteries, which are dangerous and when overheated can cause fire and explosions

Leak-proof packaging with absorbent material is still strongly encouraged