Recent news affecting co-op / condo buyers, sellers, boards and residents. This week, an Afghan War vet says his Shih Tzu helps his PTSD; co-op wonders otherwise; a condo board loses over phantom cigarette smoke; and while one co-op hopes a new commercial tenant finally takes, another backs down on tacky chains. Plus, Chloë Sevigny has no big love for her co-op anymore. And for condo / co-op boards, we've the latest on green roofs and on e-mailing notices.