Standard screening
Nebulizers, CPAPs, BiPAPs, and APAPs
Nebulizers, CPAPs, BiPAPs and APAPs as well as facemasks and tubing may remain in their carrying case for X-ray screening, but may be required to be removed from the carry-on.
Precheck screening
Nebulizers, CPAPs, BiPAPs and APAPs as well as facemasks and tubing may remain in their carrying case, and in the carry-on, for X-ray screening
Liquids associated with nebulizers are exempt from the 3-1-1 liquids rule, in reasonable quantities. For more information, see TSA special procedures.
Devices containing lithium metal or lithium ion batteries should be carried in carry-on baggage. Most other consumer electronic devices containing batteries are allowed in carry-on and checked baggage.
For more information to portable electronic devices, see the FAA regulations.