Chemicals can have levels of dilution, where below a certain level it ceases to be a threat. Diluted in air, or in liquids. You cant dilute a fibre.... This i

Chemicals can have levels of dilution, where below a certain level it ceases to be a threat. Diluted in air, or in liquids. You cant dilute a fibre.... This is also the same reason why nanoparticles are such a threat.