Josh O'Connor's Shocking Hay Allergy Discovery

British actor Josh O'Connor recently uncovered a significant allergy to hay while working on the film "The Mastermind." Previously attributing his symptoms to common hay fever, O'Connor realized the true extent of his condition when intense exposure on set led to a severe reaction.

Specifically, filming a scene involving a hay barn resulted in O'Connor nearly suffering an asthma attack. This incident necessitated a rapid wrap-up of filming, with the actor relying heavily on antihistamines to manage the symptoms and allow for limited takes.

The actor also disclosed a broader range of allergies, including to horses, cats, and some breeds of dogs. This adds another layer to his passion for animals, which he now navigates with medical precautions.