Let’s use actual facts to discuss this topic.
From my link:
Prevalence
With increasing news coverage on peanut allergy in the past few years, there may be a misperception that there is a high incidence of peanut allergy in the U.S. and worldwide. However, the numbers show that only 0.6 - 1.0% of people have a mild to more severe peanut allergy, and studies show that about 20% of peanut allergies can be outgrown. By comparison, about four times as many adults are allergic to seafood.
Severity
In those who are severely allergic, reactions to peanuts can occur from ingesting just a trace amount. This can cause anxiety, especially with the parents of peanut allergic children. But did you know that touching, smelling, or inhaling airborne particles from peanuts does not cause a severe reaction. ( Simonte SJ, et al. Relevance of casual contact with peanut butter in children with peanut allergy. J Allergy Clin Immunol.. 2003 Jul:112 (1): 180-2.
Smelling the aroma of peanuts is not the same as inhaling peanut particles that could potentially contain the allergenic protein. The aroma of peanuts comes from different compounds that cannot cause an allergic reaction.
In one controlled study that looked at this, 30 children with significant peanut allergy were exposed to peanut butter, which was either pressed on the skin for one minute, or the aroma was inhaled. Reddening or flaring of the skin occurred in about one third of the children, but none of the children in the study experienced a reaction either in their lungs or throughout their bodies!