Bhutan absolutely safe country to travel.
However, if you are still not convinced, consult with a local Govt. approved Bhutanese travel agent specialized in trips to Bhutan because access to the country is not that easy.
Indeed, Bhutan remains one of the safest places in the world. Police in Thimphu keep doing rounds around the city late nights to ensure your safety.
Bhutan is the only country in the world, banned products containing tobacco (cigarettes, chewing tobacco, etc) are effective throughout the country and penalties for possession or use may be severe.