Keep in mind, a lot of concerns with chickens will be the same as any other animal. Some people aren't ready for much more than a goldfish, so in that case it doesn't matter if it is a dog, cat, or chicken... they may not be ready.
Our experience: Smell has never been a problem for us on the most hot or the most wet days. We're not super diligent about keeping our coop spotless or changing the litter a ton. We keep it dry inside the coop, add shavings when needed and change it when the ammonia smell is noticeable (which isn't very often). We've seen an increase of flies, but not a ton more than we had before, and that's mostly because we let them free rang on our back porch where we have a lot of cement and so the poop kinda sits there. This year we're going to confine them more to a dirt area to keep the poop off the patio and to help with the flies.
As for travel: Of all the pets we've had, our chickens are the easiest for our neighbors to take care of. With our auto feeder and waterer they could very easily go for a couple days with no problems, but we still as our neighbors to let them out in the morning, check for eggs & check the water / feed. My auto coop door closer takes care of keeping them safe at night.
Our experience: Smell has never been a problem for us on the most hot or the most wet days. We're not super diligent about keeping our coop spotless or changing the litter a ton. We keep it dry inside the coop, add shavings when needed and change it when the ammonia smell is noticeable (which isn't very often). We've seen an increase of flies, but not a ton more than we had before, and that's mostly because we let them free rang on our back porch where we have a lot of cement and so the poop kinda sits there. This year we're going to confine them more to a dirt area to keep the poop off the patio and to help with the flies.
As for travel: Of all the pets we've had, our chickens are the easiest for our neighbors to take care of. With our auto feeder and waterer they could very easily go for a couple days with no problems, but we still as our neighbors to let them out in the morning, check for eggs & check the water / feed. My auto coop door closer takes care of keeping them safe at night.