AIDS, spreading through kiss???

We all know that spreading of AIDS is mainly due to three reasons, and the main reason is the sexual intercourse. Using the condoms while making love prevents us from the killing disease. This is what all the awareness programs taught us. But a local doctor in India had announced that there is a possibility of spreading the disease through deep kissing. But he didn’t produce any proofs for this. However making love only with our partner will never cause any problem.