There are different ways that people may have allergy.
Some people may have allergy when sees mass of people.
Now a days, with spring comes a host of sinus and nasal
issues, mainly due to the release of pollen from weeds,
trees, and grass. Adverse reactions to pollen are generally
called hay fever, or rose fever. Because of the abundance
of pollen in the air during springtime, it is extremely
difficult escape breathing in those itchy molecules.
Some people who are exposed to large amounts of pollen
can develop asthma. Environment becomes dusty and may
cause allergy.