Is Exposure To Isopropyl Alcohol Advisable During Pregnancy?

Hi, I work in a company that makes medical devices and one of the cleaning supplies we use to clean and sanitized is Isopropyl Alcohol which is 99% is it harmful to be working with that during pregnancy? I m 33 weeks right now. I ve been working with that area for a week now. Is it harmful for the baby? I have to use a mask sometimes because the smell is strong if I use to much of it. What about 90%?