To answer your question...Aids does die when it hits any air.

Jeannine

You can get different types of hepatitis. Same goes for sharing straws

The probability is very low, but still there exists a risk of hiv transmission thru razors. If a hiv person's blood is present on the razor (from a cut while shaving) and if it is not cleaned and dried properly before being used, a cut or a scrape in your face while using the same razor can transmit hiv.

The chance of hiv surviving for a long time in a razor is low compared to needles. Hiv has been known to survive in needle tips for upto several hours.

Always avoid using razors previously used by an unknown person.