I will ask her and report back...
I can imagine her having some long explanation about the unknown risks of man spreading this substance, even if its not a chemical agent. I lean on the edge of listening to Grandpa Simpson on these kind of things: https://i.imgur.com/MdjduDH.png
I mean, there are unknown risks to having children, to eating, to having mosquitoes around, to pretty much everything.
It is not meaningful to allow every conceivable unknown unknown (to channel Rumsfeld) suck out any sense of agency.