Compliment a stranger

I work as a delivery driver and I love the contact with the customers. I always try to be happy and smiling in front of the people and always try to make a quick talk to the people where possible.
During the period before Christmas, a lot of people already had very nice decorations around the house, which had to take quite a lot of time to do. I always liked to tell these people how nice and cozy their house looked before wishing them happy holidays.
I also always let the people know if I think the food smells nice (Deliveries are a lot of times around dinner time, and it often makes me hungry)