Atiyyah said: A young man asked Sayyiduna Ibn Abbas (may Allah be pleased with them both): May a fasting person kiss? He said: No. Then an old man came and asked: May a fasting person kiss? He said: Yes. The young man said: I asked you whether I may kiss while fasting and you said: No; and this man asked you whether a fasting person may kiss and you said: Yes. So how is something lawful for him that is unlawful for me, when we are both upon one religion? Sayyiduna Ibn Abbas (may Allah be pleased with them both) said to him: "The veins of the testicles are connected to the nose; when the nose smells, the private part is stirred, and when the private part is stirred, it calls to something greater than that; and the old man has more control over his desire." This was after Sayyiduna Abdullah (bin Abbas) (may Allah be pleased with them both) had lost his sight, and there was a woman behind him. Someone said: O Ibn Abbas! There is a woman behind you. He said: "Shame on you, what a (poor) companion you are to people!"
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 10558