This conditions defined by an inability to exhale normally, which causes difficulty breathing. It also be a form of COPD characterized by a chronic productive cough. Definitely cold air trapped by the lungs and mucus collectively dumped. Ultimately cause pulmonary problem. We can find easily this common issues in worldwide.

I think that was inability to inhale. Am i right?

Again is there any issue for chemicals that get attached to the humidity in air that may have caused this suffocation?

Article The Effects of Air Pollution and Temperature on COPD

https://www.ncbi.nlm.nih.gov/books/NBK215639/

Breathing in cold humid air lead to effect of supersaturation and liqiufication of water vapor in the airways. The main problem for individuals connectted with pH (acidic) of the condensed water under conditions in the airways. pH =4.5-6.5 and respiratory cells cooling.

Airway pH (logarithm of inverse concentration of H+) is central to the physiologic function and cellular biology of the airway. Even a very mild airway acid (pH reduction) insult triggers cough, bronchospasm, and neurogenic inflammation mediated by vagals fibers and other pathways (Hunt, 2006).

The pH reduction (in healthy airways pH ~6.6 (Fischer and Widdicombe, 2006)

is a main feature of inflammatory respiratory diseases and plays a role in bronchoconstriction, impaired ciliary function (and ciliary beat frequency

in the upper respiratory tract (Clary-Meinesz et al., 1998)), increased airway mucus viscosity (Holma and Hegg, 1989), and in turn can enhance inflamma

tion and airway dysfunction(Ricciardolo et al., 2004; Hoffmeyer et al., 2015)

see last results in

1 preprint// https://peerj.com/preprints/2859/

2 A. Ishmatov, Influence of weather and seasonal variations in temperature and humidity on supersaturation and enhanced deposition of submicron aerosols in the human respiratory tract, Atmospheric Environment, 2020(2019), 117226, https://doi.org/10.1016/j.atmosenv.2019.117226