Researchers studied nearly 500 adults over a five-year period and gathered traffic and aircraft noise data for each person's home address. After adjusting for other factors that contribute to cardiovascular risk (including air pollution), they found that every 5-decibel increase in the average 24-hour noise level was associated with a 34% increase in heart attacks, strokes, and other serious heart-related problems.
Research shows that these risks appear to rise in tandem with increases in PM2.5 levels, both in the short term (hours to days) and over the long term (one to five years), according to the NEJM article. Incremental rises in PM2.5 levels are also linked to a higher risk of being hospitalized or dying from heart failure.
https://www.health.harvard.edu/heart-health/how-noise-pollution-may-harm-the-heart
https://www.health.harvard.edu/heart-health/the-heart-related-hazards-of-air-pollution
worried about heart disease? better be worried about cars