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What's the difference of these two?

1. Is it all right if I smoke here?
2. Is it all right to smoke here?

Both sentences sound almost same to me.
Could you please clarify the difference?
Thanks for your help in advance.
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The only difference is that 'if I' is specifically asking whether 'I' as opposed to everyone else, can smoke here.
Emotion: smile In practice they are the same, unless of course you are a member of a royal or imperial family (or similar) in which case you can probably do anything you like here, there or anywhere, but it's always polite to ask!
Cheerio Emotion: smile
Comments  
No it is not, it is strictly forbidden.
 Mike in Japan's reply was promoted to an answer.