Instead of “deadly,” it is better to say “chronic condition.” Rhinitis is not usually fatal, but it lasts a long time. Say “constant sneezing” instead of “consistent sneezes.” “Stuffy and runny nose” is more natural than “stuffy and running nose.” Use “feels very uncomfortable” instead of “a tough feeling.” “Enhance our immune systems to keep it” is better expressed as “strengthen our immune systems to manage it.”