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Just have a care when you’re using this stuff… no idea what they put in their smoke munitions…

I’m not sure what’s in them, but universally, playing fields limit the number at a time that can be used indoors. So they’re obviously not all that lung friendly.

However (disclaimer: I never really got a mouthful of the stuff personally) I haven’t heard anyone complain about it so my assumption is that using common sense should be good enough to prevent any injuries/illnesses.