Could a simple device ease stuffy ears and face pain without drugs?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

AIM 1 Inclusion Criteria: * Adults 18 years or older with no symptoms of URI, ETD or other ENT conditions Exclusion Criteria: * Sinonasal or ear surgery within last 3 months (including balloon ET dilation) * Any ENT condition that may impact upper airway to include sinusitis, otitis, or allergies * Upper respiratory illness within last 2 weeks * Topical decongestant use in last week * Current nasal crusting or ulceration on rhinoscopy * History of severe nose bleeding within last 3 months * Known pregnancy * Allergic sensitivity to silicone or any other component of device * Inability to read and understand English * Inability to perform treatment due to underlying medical condition AIM 2 Inclusion: * Adults 18 years or older with diagnosis of ETD by an otolaryngologist * ≥6 months of symptoms duration * ≥3 ETD symptoms (ear pressure, feeling that ears are clogged, cracking/popping of ears, muffled hearing, tinnitus) * ETDQ-7 score ≥ 3 * Audiogram within the last year Exclusion: * Sinonasal or ear surgery within last 3 months (including balloon ET dilation) * Indwelling ear tubes * Tympanic membrane perforation * Hx of cholesteatoma, mastoidectomy, tympanoplasty, or ossicular chain reconstruction * Patulous ET * Hx of Meniere's disease * Moderate or severe nasal valve collapse * Grade 3-4 polyps * Upper respiratory illness within last 2 weeks * Topical decongestant use in last week * Current nasal crusting or ulceration on rhinoscopy * History of severe nose bleeding within last 3 months * Known pregnancy * Allergic sensitivity to silicone or any other component of device * Inability to read and understand English * Inability to perform treatment due to underlying medical condition AIM 3 Inclusion: * Adults 18 years or older who complain of facial pain or pressure * ≥3 months of symptoms duration (can be intermittent) * Pain/pressure VAS score ≥ 5 Exclusion: * Sinonasal surgery within the last 3 months * Grade 3-4 polyps * Upper respiratory illness within last 2 weeks * Topical decongestant use in last week * Current nasal crusting or ulceration on rhinoscopy * History of severe nose bleeding within last 3 months * Known pregnancy * Allergic sensitivity to silicone or any other component of device * Inability to read and understand English * Inability to perform treatment due to underlying medical condition