miniature gas mask on a curious canine a whimsical postapocalyptic scene of survival and protection

canine dog respirator gas mask protection breathing safety filtration airborne pollutants fumes odor mouth snout accessory pet ventilated inhalation exhalation valve filters military adventure emergency apparatus haze dust chemical biological radiation nuclear postapocalyptic whimsical adaptation environmental disaster urban small animal miniature detail muted colors inquisitive expression blurred background quiet hope thoughtful design playful demeanor contrast subtle details