Whatever risk there is (the air in kitchens, especially those with gas appliances, is known to be harmful in the long term to humans both from combustion byproducts and particulates in the air), the short term risk of inadequate temperatures is greater. A quiet/calm room with clean air and proper temps is always going to be best, but a person has to choose from the options they have available.
Make sure others in the house are practicing good sanitation with the snake in such close proximity to food and eating -- wash hands after touching the snake or any of its equipment, wash the sink area down after using it for snake-related tasks, don't let the snake roam in the kitchen or dining area. Salmonella is no joke, especially if the 'new member of the family' is a baby.