Inhaled antiinfectives are classified in ATC group J - Antiinfectives for systemic use.

Varenicline nasal spray used for dry eye disease is classified in S01XA.

This group comprises preparations for local treatment in nasal congestion (e.g. sympathomimetics) or for prophylaxis and treatment of allergic rhinitis (e.g. corticosteroids, cromoglicate preparations). Most of the products are nasal drops, nasal sprays or nasal inhalants. Formulations approved for eye, ear and nose are classified in S03.
See also R01B - Nasal decongestants for systemic use, and
R06 - Antihistamines for systemic use.

Combinations of corticosteroids with antiinfectives, sympathomimetics, antihistamines etc. are classified in this group at separate 5th levels by using the 50-series.
Fluticasone propionate is classified in R01AD08.