who invented the gas mask

The gas mask does not have a single inventor; several people created key precursors, but the first modern-style gas mask is most often credited to American inventor Lewis P. Haslett in the mid‑1800s, with later influential designs by John Stenhouse, John Tyndall, and Garrett Morgan.

Who “invented” the gas mask?

Because respirators evolved over time, historians point to a few major figures rather than one definitive inventor.

Key milestones include:

• Lewis P. Haslett patented an “Inhaler or Lung Protector” in 1849, widely cited as the first gas mask resembling the modern type.

• John Stenhouse , a Scottish chemist, created early masks using charcoal to filter toxic gases in 1854.

• John Tyndall , a physicist, improved respirators in the 1870s, adding features to filter smoke and noxious fumes for firefighters.

• Garrett Morgan patented his “Safety Hood and Smoke Protector” in 1914, a hood-and-hose device often described as an early gas mask and a key precursor to WWI military masks.

So when people ask who invented the gas mask , the most historically precise answer is:

• Haslett: first modern‑type respirator patent (1849).

• Morgan: famous early gas mask–style hood used in high‑profile rescues and later adapted for WWI.

Early military gas masks

• Widespread gas mask use began in World War I after German chlorine gas attacks at Ypres in April 1915.

• Initial “masks” were simple cotton pads soaked in chemicals and tied over the mouth and nose before evolving into full-face protective masks with chemical absorbents.

Why Garrett Morgan is often mentioned

Garrett Morgan’s device is frequently highlighted in popular discussions because:

• His 1912–1914 safety hood was commercialized and demonstrated to fire departments.

• In 1916, he used it in a dramatic tunnel rescue under Lake Erie, bringing national attention to his gas mask–like invention.

This visibility, plus his later fame as a Black inventor, leads many modern sources and forum discussions to casually say he “invented the gas mask,” even though earlier inventors had already created respirators.

In short: Haslett is credited with the first modern gas mask patent, while Morgan built one of the most influential early gas masks that helped shape the versions used in World War I.

TL;DR:

• First modern-type gas mask patent: Lewis P. Haslett , 1849.

• Famous early gas mask hood and major precursor to WWI masks: Garrett Morgan , 1912–1914.

Information gathered from public forums or data available on the internet and portrayed here.