At least half a dozen Canadians have joined a class-action lawsuit, which has not yet been certified, that claims Old Spice deodorants can cause chemical burns. Rodney Colley of Virginia was the first to file legal action against the men’s line and its parent company, Procter & Gamble, after he claims he noticed “severe injuries on his armpits.” “[He] just went to use the product, as I recall, …