What happens when a person wears new clothes without washing them?

Dr Manjusha Agarwal advised people to wash new clothes before wearing them as they often carry chemicals, dyes or finishing agents used during manufacturing. "These can cause skin irritation, rashes or allergies, especially for people with sensitive skin...Clothes also pass through many hands during production, packing and shopping, which means they may carry dust, dirt or even germs," she stated.