What happened when Earth passed through Halley’s Comet’s dust tail in 1910?

When Earth passed through the dust tail of Halley’s Comet in 1910, there were no detectable effects on the planet or its inhabitants.12

Prior to this event, the identification of the poisonous gas cyanogen within the comet's coma led to widespread public panic. In anticipation of the passage, many people purchased "comet pills" and held "end-of-the-world" parties. Despite these fears, the comet passed by at a distance of 0.15 astronomical units on the night of May 18–19, 1910, without causing any harm.1