Simplify the following text for a Grade 9 native English-speaking person.
Original: It is a symptom usually associated with the common cold and chesty coughs , but can also be found in patients with infections of the adenoids , middle ear , sinus or tonsils .
Simplified: It is a symptom usually from the common cold and coughs , but can also be found in people with infections of the adenoids , middle ear , sinus or tonsils .