Styler,
The link below is to an exchange between some of us former smokers here on the forum, about a year ago.
There is no sense in beating yourself up for being a smoker, however, good statistics show that those who continue to smoke after being treated for BC have a higher risk of having the cancer return. BC does have a tendency to return, regardless of former smoking status. Bottom line - what really matters now to to stop as part of your healing process.
Believe me, after quitting and a couple of weeks of being a real grump and irritable, life gets back to normal. You can do this. If you need support, talk to your care team. You have everything to gain.
https://bladdercancersupport.org/bladder-cancer-forum/17-chit-chat/45284-smoking.html#52100
Best,
Jack