Whether laryngitis is contagious or not is related to the causative factors. If the laryngitis is caused by infection, the pathogen may be contagious through breathing, but not necessarily morbid; if the laryngitis is caused by physical as well as chemical factors and allergies, it is usually not contagious.
Most cases of laryngitis are caused by viral and bacterial infections. Viral infections are usually caused by viruses such as influenza virus, coxsackie virus, adenovirus, etc., and are usually transmitted through close contact and droplet infection. Bacterial pharyngolaryngitis, which is dominated by streptococcal, staphylococcal, and pneumococcal infections, is usually transmitted through the respiratory tract. However, the infected person does not necessarily develop the disease.
Physical and chemical factors, allergies, etc. can also cause laryngitis, in which case laryngitis is generally not contagious.
In conclusion, if you have symptoms of laryngitis, consult a doctor for a clear diagnosis and follow the doctor’s instructions for treatment.