Hopefully this all "blows over" but maybe not, and the Reuters analysis doesn't go quite far enough
What if Katia (a larger, adjacent) volcano goes?
SCENARIOS-Potential scenarios for volcano gas cloud crisis
"If the cloud remains stubbornly over Europe for a sustained period of time, perhaps weeks or longer, the travel sector would take a serious hit. Wider industries would also be affected from high-tech manufacturing to supermarkets and event organisers."