Mine grow in pots outdoors, year around and are just now breaking dormancy. They have been reported as hardy in Z5b (-15) planted in the garden. The odor usually lasts only a few days, probably until pollination occurs. The vector I've noticed is a swarm of green flies, which to me is more objectionable than the odor.
The tender Aroids that I bring in for the winter are planted in well drained potting mix and allowed to dry out and remain in the pots until last chance of frost has past in the spring before placing outdoors and watering. They are often later in flower and foliage than they would be in their native habitat, but I enjoy them whenever they decide to bloom.

Here is a link that might be useful: Aroid Hardiness List