Real pheromones can have an effect on people who are already emotionally close to you but chances are small that the kind found in a spray will even reach a stranger, much less make them become attracted to you.

Do pheromones really affect human behavior?

The debate over whether pheromones affect human behavior is hardly over, but at least enough evidence has been collected that a consensus has emerged on some effects, such as menstrual synchrony.

Do pheromones make you attracted to someone?

Individuals who secrete an elevated level of pheromones are likelier to have more sex, feel more confident and be perceived as more sexually attractive. These effects in turn draw these people more attention, social engagement and bonding with others. ... Pheromones can turn people off for seemingly no reason.