I believe @JoshK warned us for that in sep’14 ;). Actually that was before you joined this forum…
But in your last post you said you used an “air bulb” which is not air in a can… I don’t think the air bulb should do any harm, but obviously wiping it with IPA and PEC-pads is the proper way to go.
Though it’s never a bad thing to remind readers that air can’s shouldn’t be used to clean the mirrors! They might have missed Josh’s topic like you have.