Finola Hughes: I suffer from allergies and I’ve used the Aller-Ease products for years. For me, allergy-proofing is essential. Otherwise, I’m sneezing, coughing, tired, itchy, watery eyes.

The temperature dives, the snow arrives, and suddenly we’re inside. So are our allergens. The “allergy experts” at Aller-Ease, a maker of allergen filtration products, estimate that 62 ...