I think to the point where it's still contaigeous, yes. but i dont think that's it's a for certain thing either. your body might be able to kill it off before it reaches the point where you yourself get it. i DO KNOW however, that kissing is NOT the only way to get mono. Hope I've helped =)
Mono is actually very contagious and can spread through skin contact, sharing of food, drinks, eating or cleaning utensils, and of course kissing.
Yeah you can... so you should avoid sharing drinks if you know the person ever had or has mono.