Flavour Concentrates are flavours in a concentrated form and are not to be smoked as is.
Advised dosage on concentrates is 7-10 drops per 10ml base e-liquid. Don't forget to allow the liquid to bind for at least 24/48 hours before vaping. This is also known as 'Steeping' in the vaping community.
Please make sure you mix it with a base liquid before vaping.