Ключевые слова: aerosol, airborne, aircraft, airplane, anomaly, atmospheric, aviation, aviation industry, chemtrails, climate, clouds, conspiracies, conspiracy theory, contamination, contrails, controversial, curiosity, curious, emissions, environment, fascination, flying, hypothesis, intrigue, mysterious, mystery, observation, phenomenon, pollution, science, scientific, secrets, sky, skyline, skyward, skywatching, spraying, steam, suspicion, trails, unusual, vapors, weather,