What were the effects of poison gas, according to the reporter?

The most widely used, mustard gas, could kill by blistering the lungs and throat if inhaled in large quantities. Its effect on masked soldiers, however, was to produce terrible blisters all over the body as it soaked into their woollen uniforms.

I just did the assignment

The answer is B Soldiers suffered from nausea and began to pass out, while some even died.