No Smoking Signs Vaping May Be Less Harmful Than Smoking, But What Are The Long term Australia No Smoking Signs For Business VAPING: Less harmful but not safe ScienceUpFirst Rethinking Vaping Don't be foolede cigs or vapes may be less harmful than cigarettes, but less harmful doesn't mean safe. Vapes can contain harmful substances including nicotine, heavy metals like lead, volatile organic compounds and No, vapes aren't 95% less harmful than cigarettes. Here's how this decade old myth took off