A Study to Assess the Total Systemic Exposure Bioequivalence of of Budesonide, Glycopyrronium, and Formoterol Delivered by BGF MDI With Next-Generation Propellant Compared With BGF MDI With HFA Propellant

This is a Phase I, randomized, double-blind, single-dose, single-center, partial-replicate, 3 way cross-over study to assess pharmacokinetic and safety of BGF MDI when administered with different propellants, HFO (HFO-1234ze) - test and HFA (HFA-134a) - reference. The study will comprise of: * A screening period up to 28 days prior to first dosing; * Three Treatment Periods: Participants will be resident at the Clinical Unit from the morning on the day before dosing with BGF MDI on Day -1 of Treatment Period 1, until 24 hours following the final dose on Day 2 of Treatment Period 3, with a washout period of 3 to 7 days between each dose; and * Follow-up: final safety Follow-up Phone Call within 3 to 7 days after the last administration of BGF MDI in Treatment Period 3. Each participant will receive 3 single dose treatments of BGF MDI (Treatment A: BGF MDI HFO \[Test\]; Treatment B: BGF MDI HFA \[Reference\]) following an overnight fast of at least 8 hours on Day 1 of each treatment period. The reference formulation will be administered during 2 of the 3 treatment periods. There will be a minimum of a 3 to 7 day washout between administration of each treatment. Each participant will be involved in the study for approximately 55 days.