Normal Infant Breathing Patterns: Snoring in a 1-month-old infant can often be attributed to normal infant breathing patterns. Infants, especially at this age, can have narrower airways, and their breathing can sound more labored or noisy, which might be misinterpreted as snoring.

Nasal Congestion: Common in infants due to their small nasal passages, which can easily become congested, leading to noisy breathing or snoring.
Tongue-Tie or Lip-Tie: These conditions can affect an infant's ability to breathe properly, especially during sleep, potentially causing snoring sounds.
Reflux: Gastroesophageal reflux disease (GERD) can cause discomfort and lead to breathing difficulties or noisy breathing in infants.

Choanal Atresia: A congenital condition where the back of the nasal passage is blocked, which can cause significant breathing difficulties and is life-threatening if not diagnosed promptly.
Pierre Robin Sequence: A condition characterized by a small lower jaw, which can lead to the tongue falling back and obstructing the airway, causing snoring and potentially severe breathing difficulties.
Congenital Heart Disease: Certain heart defects can lead to respiratory symptoms, including snoring, due to increased respiratory effort or heart failure.

Laryngomalacia: A condition where the tissues of the larynx are soft and floppy, which can cause partial airway obstruction, leading to noisy breathing or snoring.
Subglottic Stenosis: A narrowing of the airway below the vocal cords, which can cause breathing difficulties and snoring.
Sleep Apnea: Though less common in infants, sleep apnea can occur and is characterized by pauses in breathing during sleep, which can be associated with snoring.