The Lao word for “hello” is “sabai dee”, say it with smile and you’ll be well received. Feet are low. Placing them on furniture or pointing at things or people with your feet is not acceptable. Personal cleanliness is valued highly in Laos. Anyone who has strong body odour tends to get disgusting looks. Before entering a Lao person’s home, take your shoes off and leave them outside the house or on stairs.

Source: http://factsanddetails.com/southeast-asia/Laos/sub5_3b/entry-2952.html