2. There is a distinct smell of paint in the rooms for several days after painting. Does it have an adverse effect on health?

Paint hardening process (exuding smell) may last up to 28 days depending on the thickness of paint coat on the wall. Turning off the radiators and ventilating the room often helps to neutralize the smell. Senseo emulsion paint is a water-soluble product and its smell does not have a negative effect on human health.