When you identify the source, use this spray to spray vigorously at the farter. Not only a unique and funny gift but a useful one too! With a convenient size, it fits in the hand or a pocket so you never have to sit through a fart again.
As the saying goes: hope for the best and plan for the worst. That's why this 24-in-1 Survival Kit exists, to keep you prepared for any emergency. It is a useful gift for an adventurous person but also can be quite handy to keep one in the car, just in case.