成日睇新聞講閼於HPV病毒研究，通常都會話咩過去一年或以上維持單一性伴侶bla bla bla果啲人都有好高機會感染HPV。
呢個我明點解，縱使目前係單一性伴侶，但可能係以前果啲性伴侶傳染比佢。
但我想問，如果大家雙方都係彼此人生中唯一一個性伴侶，即係互相破大家嘅處，咁又有冇機會感染同性器有關嘅HPV呢
好問題!
如果有呢個假如, 理論上好似是成立的
但, 又有無諗過, 追溯遠古, 呢啲細菌/病毒, 係點樣無啦啦走出來?
科學與醫學也沒有絕對, 只告訴你機會率高與低… 至今天的研究約170種人類乳頭瘤病毒中, 大概有30-40種是經性接觸傳染而會引致子宮頸癌
但病毒基因是有變異的可能性
因這種種, 我會答仍有機會的 
there was a crazy news story a while ago, where a family all contracted HPV - including a kid - because the mattress in their Shanghai hotel was dirty. not sure how common it is for HPV to spread outside bodies
HPV is a virus. For viruses to survive, they have to rely on a medium in which they get such necessary conditions as temperature, humidity, etc. Scientifically, without this medium, most viruses cannot survive. Therefore, the above story is doubtful.
If you read the article carefully, it does indicate ‘a sexually transmitted infection that spreads by skin contact with an infected person’. There are a lot of speculations presented by the reporter without any medical support.
There are many different types of HPV, some of them are sexually transmitted but some not. If that’s specifically related to sexually transmitted, some sort of body fluid exchange in a conducive environment should be present, e.g. sexual activity.
Read some more here: http://www.hpv.com.au/females/hpv-faq.aspx