I have never smelt smoke while on our balcony and I can smell it a mile away. On our first Regent cruise about 12 years ago, a young couple kept smoking on balcony. They were warned to stop or they would be put off the ship. Apparently, they continued one more time. Security showed up to escort them off. That got through to them and they were given one more chance. They behaved after that.
This same couple was proudly showing shots of a whale they took in Juneau with a beautiful blue sky. Juneau had been rainy all day. It was a pic of a pic in brochure. 😜