okay! I finally figured it out! I wasn't Fenton's mom, it was Daisy Duck and it was in an old Disney short called "Donald's Diary."
After the honeymoon, he sees what Daisy looks like in the morning for the first time. He comes into the kitchen and is shocked to find Daisey is curlers and robe with baggy eyes. She's pouring coffee and has a cigarette dangling from her mouth. In response to Donald's freak-out she's all "Whats the matter?"
It happens at the 4:45 mark and it still makes me crack up.
"IMDB.Where 14 year olds can pretend to be jaded 40 year old movie critics"

I got the feeling she was a chain smoker for some reason!

No I don't believe so.She did always walk around in rob and slippers

I don't remembering her ever smoking. And back then, it was becoming taboo to show smoking in cartoons. Like there's a scene in one "Duck Tales" episode, where two men are caring a box with fireworks, and one of them drops a cigarette into the box, and the fireworks catch fire and go off. But later on, they edited that scene, so we couldn't see the smoking, which of course makes the scene weird, as they don't show how the fireworks could have gone off.
So I would say, that we never saw Mrs Crackshell smoke. I know she seems like the kind of person, who could smoke a pack of cigarettes every day, if she only had wanted to. But if she did, we never saw it. She ate a lot of crackers and popcorn though, which maybe wasn't healthy either.
Yes, it's true! IMDB has reached Sweden!

Damn, I don't know who to believe. Seriously, I should probably just Netflix them to find out, right? Thanks for responding!
"IMDB.Where 14 year olds can pretend to be jaded 40 year old movie critics"

yeah I think she smoked

I don't think we ever saw her smoke.
Yes, it's true! IMDB has reached Sweden!