Bold lettering shouts “KOOLMONOXYDE” across the top, immediately framing Hans Bolleman’s 1942 poster as a public warning rather than mere decoration. Beneath the headline, the Dutch phrase “…SLUIPEND GEVAAR…” (“…creeping danger…”) hangs over a dramatic scene in which an unconscious figure lies near a vehicle, the body rendered in cool tones that heighten the sense of silent threat. A yellow haze curls through the composition like an invisible gas, turning an everyday garage setting into a place of urgent risk.
The artwork leans into streamlined, modern shapes—rounded car forms, strong blocks of color, and theatrical lighting—to make a technical hazard feel personal and immediate. A hand holding a wrench suggests routine maintenance, yet the poster pivots that familiarity into alarm: one small oversight can have devastating consequences. The contrast between the calm, stylized surfaces and the figure’s lifeless posture underscores the central message that carbon monoxide doesn’t announce itself.
Text at the bottom—“GEEN BRANDENDE GENERATOR IN GARAGE”—reinforces the practical takeaway, advising against running an engine in an enclosed space. For WordPress readers interested in wartime-era design, safety campaigns, or Dutch graphic art, this piece is a compelling example of how posters communicated life-and-death information through striking visuals. Bolleman’s composition remains memorable precisely because it makes the unseen visible, using typography and color to imprint the danger of carbon monoxide long after the viewer looks away.