Tthe traditional jack o'lantern was a swede/gert big turnip, it's an Irish tradition based on Stingy Jack, that became Americanised. When I was a nipper (start the violins) it was always a turnip and my poor dad would take a week to carve the begger out, the smell of singed turnip is one that is etched in my brain, it's vile, far worse than pumpkin. So turnip for memories, pumpkin for practicality.
Hallowe'en's also time for the PĂșca! The one time of the year the dog doesn't get dressed up, she is the devil goblin dog!
When I was a kid it was always a swede for me, I used to love carving it as I ate all the raw flesh - yes I was a wierd child > Oh and as for the smell I have always found it quite pleasant............ Now though I am a pumpkin person, I love them ;D