Marc Wilmots says he is comfortable with Radja Nainggolan smoking, admitting the midfielder would "trash his room" if he tried to stop him.
The Roma midfielder is the only smoker in the Belgium squad, and Wilmots has revealed the national team made special arrangements to allow him to do it.
"Yes, Radja smokes," the Rode Duivels coach told Sporza. "It's a habit and a lot of people do it in France and Italy.
"I am not going to stop him if that's what he needs. I am flexible when it comes to matters like this. It's his body.
"I'm fine with it so long as he performs out there on the pitch.
"I always make sure he gets a room with a balcony, so he does not set off the smoke alarm.
"I think he is the only one at the Belgium national team who smokes.
"I reckon he would trash his room if we forbade him to smoke five or six cigarettes per day.
"It's his problem if this means he will have to retire at 30 rather than at 35."