Can you kiss someone with a mouth ulcer?

As a localized lesion of the oral mucosa, oral ulcers may be accompanied by pain, redness, swelling, and inflammation. During kissing, due to close oral contact, there may be an increased exchange of microorganisms such as bacteria and viruses, which could potentially worsen ulcer symptoms or lead to infection. For mild oral ulcers, if both individuals have good oral health and maintain proper oral hygiene, kissing may not have a significant impact. However, it should still be done适度 (moderately), with attention to the other person's comfort. If the ulcer is severe, accompanied by significant pain or signs of infection, it is advisable to temporarily avoid kissing to prevent worsening the condition or delaying recovery. During the period of ulceration, maintaining oral hygiene and avoiding irritating foods can help promote healing. If you have any concerns, please consult a healthcare professional.