The effects should disappear within what time frame?

• A. 15 to 45 minutes
• B. 5 to 10 minutes
• C. 1 to 2 hours
• D. 2 to 4 hours

Answer: (A)

OC spray causes temporary irritation of the eyes, nose, and throat, leading to tearing, burning, and coughing. The duration of these effects is short and will diminish as the irritant dissipates and you begin proper decontamination. In typical training and field guidance, these sensations should fade within about 15 to 45 minutes, assuming you move away from the spray, rinse the eyes and skin with clean water, and get to fresh air. This window covers from light to moderate exposure with immediate washing; if exposure is heavier or decontamination is delayed, symptoms can last longer, but most cases resolve within this 15–45 minute frame. Timeframes like 5–10 minutes are usually too short for complete clearance, while 1–2 hours or 2–4 hours go well beyond the common duration observed after proper decontamination.