If you're not allergic to latex balloons or gloves or anything like that, then latex condoms won't pose a problem. Although if you are, it's usually nothing to really worry about and the reaction is usually mild dermatitis, which can be itching, burning, or general discomfort - but if you've had no problem with balloons, it's very unlikely you'll see any of this. Just keep in mind they have to include those warnings on the box because a small percentage of people can suffer from fatal reactions, but again, if you're fatally allergic to latex, you'll know by now. Don't worry!