But latex allergens aren't airborne - you'd have to touch the balloon to have a reaction.
I remember seeing some article about how hospitals didn't want latex balloons -- also something about how they could be a hazard if they popped or after they deflated. I don't remember all the details.
You don't want to let the mylar ones loose outside, though, because they're hard on power lines.
Also balloons kill turtles. Send a card!
The latex ones shouldn't be let loose outside, either, because when they deflate, animals can choke on them.
Send a card made of post-consumer recycled paper with soy ink!
Send one of those plantable cards! The ones with seeds embedded in the paper, so that you can put the whole card in some soil and water it and flowers will grow!
Wait. We started this with the problems with flowers. Hmm.
Wait. We started this with the problems with flowers. Hmm.
NOOOOOOOooooooooooooooooooooooooooo!!!!
I bet those placenta teddy bears are hypoallergenic and environmentally friendly...