He has never had any soda (I believe Americans call it). The same will go for my 15 month old.
We let our son try it once when he asked about it. We don't drink soda much (like once a month) and he was curious.
He doesn't like the sensation (maybe he is texture adverse?) and I'm glad of it. Empty calories; and I'd rather he drink 100% fruit juice if he wants a sweet drink. He knows to ask at parties if there is "fizz" in a drink before accepting, so the conversation about food issues affecting social situations is interesting. I certainly don't want him to be perceived as a "pain" invitee, so I tell him to ask for "water, please."
Can you believe I've seen mothers open up a can of soda (I call it that, but some call it pop in US depending on location) and unscrew a baby bottle, fill 'er up and hand it to their baby?!
Might as well light up a cigarette and let them take a long suck on that, mama.